The Eternal Wanderer (Phyrexia: All Will Be One)

Legendary Planeswalker - No more than one creature can attack The Eternal Wanderer each combat.
+1: Exile up to one target artifact or creature. Return that card to the battlefield under its owner's control at the beginning of that player's next end step.
0: Create a 2/2 white Samurai creature token with double strike.
?4: For each player, choose a creature that player controls. Each player sacrifices all creatures they control not chosen this way.